Mask cushion



FIG. 1 is a perspective view of a first embodiment of a mask cushionshowing our design;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a rear view of a second embodiment of a mask cushion thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a side view thereof.

Where included, broken lines showing environment or structure are forillustrative purposes only and form no part of the claimed design.

The use of stippling is used to indicate shading.

The ornamental design for a mask cushion, as shown and described.